:root {
  color-scheme: dark;
  --bg: #071014;
  --panel: rgba(10, 24, 32, 0.78);
  --panel-strong: rgba(8, 20, 28, 0.92);
  --line: rgba(142, 219, 231, 0.22);
  --cyan: #6de7ff;
  --sky: #54a9ff;
  --gold: #f6c96c;
  --green: #77e0b5;
  --rose: #f69a9a;
  --text: #eef8fb;
  --muted: #9fb5bd;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 18% 8%, rgba(72, 155, 255, 0.2), transparent 31rem),
    radial-gradient(circle at 80% 62%, rgba(246, 201, 108, 0.16), transparent 28rem),
    linear-gradient(180deg, #061523 0%, #071014 47%, #100d08 100%);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -3;
  content: "";
  background-image:
    linear-gradient(rgba(109, 231, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(109, 231, 255, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.86), transparent 88%);
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(20px, 5vw, 72px);
  background: rgba(5, 14, 20, 0.78);
  border-bottom: 1px solid rgba(109, 231, 255, 0.18);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid rgba(109, 231, 255, 0.52);
  background: linear-gradient(135deg, rgba(84, 169, 255, 0.3), rgba(246, 201, 108, 0.18));
  font-size: 13px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 16px;
  color: var(--muted);
  font-size: 14px;
}

.nav a:hover {
  color: var(--cyan);
}

.hero {
  position: relative;
  min-height: 92vh;
  overflow: hidden;
  padding: 86px clamp(20px, 5vw, 72px) 62px;
}

.sky-field,
.ground-field {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.sky-field {
  clip-path: polygon(0 0, 100% 0, 100% 52%, 0 64%);
  background:
    linear-gradient(125deg, rgba(26, 114, 210, 0.54), transparent 56%),
    repeating-linear-gradient(100deg, transparent 0 42px, rgba(109, 231, 255, 0.08) 43px 44px);
}

.ground-field {
  clip-path: polygon(0 60%, 100% 48%, 100% 100%, 0 100%);
  background:
    linear-gradient(165deg, transparent 0 20%, rgba(246, 201, 108, 0.13) 36%, transparent 52%),
    repeating-linear-gradient(170deg, rgba(246, 201, 108, 0.12) 0 1px, transparent 1px 34px);
}

.civil-aircraft {
  position: absolute;
  top: 17%;
  right: 11%;
  width: min(34vw, 420px);
  height: 130px;
  transform: rotate(-7deg);
  filter: drop-shadow(0 0 34px rgba(109, 231, 255, 0.34));
}

.plane-body {
  position: absolute;
  top: 54px;
  left: 28px;
  width: 340px;
  height: 34px;
  border-radius: 70% 100% 100% 70%;
  background: linear-gradient(90deg, rgba(224, 246, 255, 0.96), rgba(109, 231, 255, 0.46));
}

.plane-body::before {
  position: absolute;
  top: 5px;
  left: -24px;
  width: 74px;
  height: 24px;
  border-radius: 100% 20% 20% 100%;
  background: linear-gradient(90deg, rgba(232, 249, 255, 0.98), rgba(122, 205, 255, 0.68));
  content: "";
}

.plane-wing {
  position: absolute;
  background: linear-gradient(135deg, rgba(84, 169, 255, 0.9), rgba(246, 201, 108, 0.32));
}

.main-wing {
  top: 42px;
  left: 156px;
  width: 138px;
  height: 56px;
  clip-path: polygon(0 42%, 100% 0, 65% 100%, 10% 70%);
}

.tail-wing {
  top: 24px;
  left: 40px;
  width: 76px;
  height: 58px;
  clip-path: polygon(0 100%, 68% 0, 100% 78%, 34% 72%);
}

.plane-window {
  position: absolute;
  top: 61px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #062434;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.62);
}

.w1 {
  left: 142px;
}

.w2 {
  left: 166px;
}

.w3 {
  left: 190px;
}

.flight-line {
  position: absolute;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
  transform-origin: left center;
}

.line-a {
  top: 27%;
  left: 9%;
  width: 42vw;
  transform: rotate(-13deg);
}

.line-b {
  top: 37%;
  right: 9%;
  width: 30vw;
  transform: rotate(10deg);
}

.drilling-system {
  position: absolute;
  right: 20%;
  bottom: 0;
  width: 170px;
  height: 360px;
}

.derrick,
.wellbore,
.bit {
  position: absolute;
  display: block;
}

.left-leg,
.right-leg {
  bottom: 122px;
  width: 4px;
  height: 206px;
  background: linear-gradient(180deg, var(--gold), rgba(246, 201, 108, 0.08));
  box-shadow: 0 0 24px rgba(246, 201, 108, 0.28);
}

.left-leg {
  left: 42px;
  transform: rotate(15deg);
}

.right-leg {
  right: 42px;
  transform: rotate(-15deg);
}

.cross-a,
.cross-b {
  left: 52px;
  bottom: 212px;
  width: 70px;
  height: 3px;
  background: rgba(246, 201, 108, 0.82);
  transform: rotate(31deg);
}

.cross-b {
  transform: rotate(-31deg);
}

.wellbore {
  left: 83px;
  bottom: 34px;
  width: 7px;
  height: 274px;
  background: linear-gradient(180deg, rgba(109, 231, 255, 0.78), rgba(246, 201, 108, 0.72));
  box-shadow: 0 0 26px rgba(109, 231, 255, 0.32);
}

.bit {
  left: 73px;
  bottom: 18px;
  width: 28px;
  height: 26px;
  clip-path: polygon(50% 100%, 0 0, 100% 0);
  background: var(--gold);
  box-shadow: 0 0 20px rgba(246, 201, 108, 0.5);
}

.reservoir {
  position: absolute;
  height: 18px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, rgba(119, 224, 181, 0.45), transparent);
}

.r-a {
  right: 6%;
  bottom: 20%;
  width: 46%;
}

.r-b {
  left: 8%;
  bottom: 11%;
  width: 58%;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 460px);
  gap: clamp(28px, 6vw, 86px);
  align-items: center;
  max-width: 1240px;
  margin: 0 auto;
}

.eyebrow,
.panel-kicker {
  margin: 0 0 12px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 800px;
  margin-bottom: 22px;
  font-size: clamp(44px, 7.4vw, 96px);
  line-height: 1.02;
  letter-spacing: 0;
}

.lead {
  max-width: 650px;
  color: #cde6ed;
  font-size: clamp(18px, 2vw, 23px);
  line-height: 1.74;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.hero-actions a,
.official-links a {
  min-width: 132px;
  padding: 13px 18px;
  border: 1px solid rgba(109, 231, 255, 0.42);
  background: rgba(7, 16, 20, 0.64);
  color: var(--text);
  text-align: center;
}

.hero-actions a:first-child {
  background: linear-gradient(135deg, rgba(84, 169, 255, 0.72), rgba(119, 224, 181, 0.34));
}

.identity-panel,
.career-card,
.research-map article,
.image-card,
.patent-list article,
.stats article,
.achievement-pair article,
.teaching-grid article,
.story-card,
.life-panel,
.life-marquee figure,
.official-links a {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.24);
}

.identity-panel {
  padding: 26px;
}

.profile-head {
  display: grid;
  grid-template-columns: 142px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.avatar-shell {
  width: 142px;
  aspect-ratio: 1;
  padding: 8px;
  border: 1px solid rgba(109, 231, 255, 0.3);
  background: linear-gradient(135deg, rgba(84, 169, 255, 0.18), rgba(246, 201, 108, 0.1));
}

.avatar-placeholder {
  display: grid;
  width: 100%;
  height: 100%;
  place-items: center;
  background:
    linear-gradient(150deg, rgba(109, 231, 255, 0.16), rgba(246, 201, 108, 0.14)),
    linear-gradient(45deg, transparent 48%, rgba(255, 255, 255, 0.16) 49% 51%, transparent 52%);
  color: #d7eef5;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
}

.identity-panel h2 {
  margin-bottom: 14px;
  font-size: 34px;
}

.tag-cloud,
.interest-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud span,
.interest-cloud span {
  padding: 7px 10px;
  border: 1px solid rgba(109, 231, 255, 0.22);
  background: rgba(255, 255, 255, 0.04);
  color: #d8edf2;
  font-size: 12px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 24px 0 0;
}

.contact-grid div {
  padding: 13px 14px;
  border: 1px solid rgba(109, 231, 255, 0.14);
  background: rgba(255, 255, 255, 0.03);
}

dt {
  color: var(--muted);
  font-size: 12px;
}

dd {
  margin: 6px 0 0;
  overflow-wrap: anywhere;
  font-weight: 700;
}

.section {
  padding: 72px clamp(20px, 5vw, 72px);
}

.section-heading {
  max-width: 1240px;
  margin: 0 auto 28px;
}

.section-heading h2 {
  margin-bottom: 0;
  font-size: clamp(30px, 4vw, 52px);
}

.with-note {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.with-note p:last-child {
  max-width: 360px;
  color: var(--muted);
  line-height: 1.7;
}

.split-section {
  background: linear-gradient(180deg, rgba(7, 24, 37, 0.45), rgba(10, 13, 10, 0));
}

.timeline,
.research-map,
.patent-list,
.teaching-grid,
.story-grid {
  display: grid;
  max-width: 1240px;
  margin: 0 auto;
  gap: 18px;
}

.timeline {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.timeline article {
  position: relative;
  min-height: 190px;
  padding: 24px 22px;
  border-left: 1px solid rgba(109, 231, 255, 0.44);
  background: linear-gradient(180deg, rgba(109, 231, 255, 0.08), transparent);
}

.timeline span {
  position: absolute;
  top: 24px;
  left: -5px;
  width: 9px;
  height: 9px;
  background: var(--cyan);
  box-shadow: 0 0 22px var(--cyan);
}

.career-card {
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(24px, 4vw, 42px);
}

.career-org {
  margin-bottom: 10px;
  color: var(--gold);
  font-weight: 700;
}

.career-card h3 {
  font-size: clamp(24px, 3vw, 38px);
}

.research-section {
  background:
    linear-gradient(90deg, rgba(84, 169, 255, 0.08), transparent 45%, rgba(246, 201, 108, 0.08)),
    rgba(255, 255, 255, 0.015);
}

.research-map {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.research-map article {
  min-height: 260px;
  padding: 24px;
}

.research-map strong {
  color: var(--gold);
  font-size: 42px;
}

article p,
.life-panel {
  color: var(--muted);
  line-height: 1.72;
}

.marquee,
.certificate-strip,
.life-marquee {
  max-width: 100%;
  overflow: hidden;
  border-block: 1px solid rgba(109, 231, 255, 0.14);
}

.marquee-track,
.certificate-track,
.life-track {
  display: flex;
  width: max-content;
  gap: 18px;
  padding: 18px 0;
  animation: scroll-shuttle 24s ease-in-out infinite alternate;
}

.image-card {
  width: 320px;
  height: 210px;
  padding: 22px;
  background:
    linear-gradient(135deg, rgba(84, 169, 255, 0.18), rgba(119, 224, 181, 0.08)),
    var(--panel);
}

.image-card span {
  display: block;
  margin-bottom: 82px;
  color: var(--cyan);
  font-weight: 700;
}

.patent-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 26px;
}

.patent-list article {
  padding: 22px;
}

.patent-list span {
  color: var(--muted);
  font-size: 13px;
}

.patent-list strong {
  display: block;
  margin: 16px 0;
  color: var(--gold);
  font-size: 28px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 920px;
  gap: 16px;
  margin: 0 auto 26px;
}

.stats-four {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 1080px;
}

.stats article {
  padding: 22px;
  text-align: center;
}

.stats strong {
  display: block;
  color: var(--cyan);
  font-size: 48px;
}

.stats span {
  color: var(--muted);
}

.achievement-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  max-width: 620px;
  gap: 16px;
  margin: 0 auto 28px;
}

.achievement-pair article {
  padding: 20px;
  text-align: center;
}

.achievement-pair strong {
  display: block;
  color: var(--gold);
  font-size: 34px;
}

.achievement-pair span {
  color: var(--muted);
}

.certificate-track figure,
.life-track figure {
  display: grid;
  width: 240px;
  height: 154px;
  place-items: center;
  margin: 0;
  border: 1px solid rgba(246, 201, 108, 0.28);
  background:
    linear-gradient(145deg, rgba(246, 201, 108, 0.14), rgba(109, 231, 255, 0.06)),
    rgba(10, 24, 32, 0.68);
  color: #e9d39b;
  font-weight: 700;
}

.reverse .certificate-track,
.reverse-speed {
  animation-direction: alternate-reverse;
}

.motto-panel {
  max-width: 1240px;
  margin: 0 auto 26px;
  padding: 34px 28px;
  border-block: 1px solid rgba(109, 231, 255, 0.18);
  background:
    linear-gradient(90deg, rgba(84, 169, 255, 0.16), transparent 52%, rgba(246, 201, 108, 0.15));
}

.motto-panel p {
  margin: 0;
  font-size: clamp(32px, 6vw, 76px);
  line-height: 1.18;
  font-family: "STKaiti", "KaiTi", "Microsoft YaHei", serif;
}

.motto-panel p:last-child {
  color: var(--gold);
  text-align: right;
}

.teaching-grid,
.story-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.teaching-grid article {
  min-height: 210px;
  padding: 24px;
}

.story-grid {
  margin-top: 22px;
}

.story-card {
  min-height: 230px;
  padding: 24px;
  background:
    linear-gradient(145deg, rgba(109, 231, 255, 0.12), transparent 55%),
    var(--panel-strong);
}

.story-card span {
  display: grid;
  height: 126px;
  place-items: center;
  margin-bottom: 18px;
  border: 1px dashed rgba(109, 231, 255, 0.28);
  color: var(--muted);
}

.life-title {
  max-width: 1240px;
  margin: 0 auto 18px;
  color: var(--gold);
  font-family: "STKaiti", "KaiTi", "Microsoft YaHei", serif;
  font-size: clamp(36px, 6vw, 80px);
  line-height: 1.1;
}

.interest-cloud {
  max-width: 1240px;
  margin: 0 auto 28px;
}

.interest-cloud span {
  border-color: rgba(246, 201, 108, 0.28);
  color: #f3deaa;
  font-size: 15px;
}

.life-track figure {
  width: 260px;
  height: 180px;
  background:
    linear-gradient(135deg, rgba(246, 154, 154, 0.12), rgba(109, 231, 255, 0.1)),
    rgba(10, 24, 32, 0.68);
}

.official-links {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 1240px;
  gap: 16px;
  margin: 0 auto;
}

.official-links a {
  display: grid;
  min-height: 86px;
  place-items: center;
}

.official-links a:hover {
  border-color: rgba(109, 231, 255, 0.72);
  background: rgba(109, 231, 255, 0.1);
}

@keyframes scroll-shuttle {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero-inner,
  .timeline,
  .research-map,
  .patent-list,
  .teaching-grid,
  .story-grid,
  .stats,
  .stats-four,
  .official-links {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .with-note {
    align-items: start;
    flex-direction: column;
  }

  .civil-aircraft {
    top: 8%;
    right: -4%;
    opacity: 0.42;
  }

  .drilling-system {
    right: 4%;
    opacity: 0.45;
  }
}

@media (max-width: 620px) {
  .hero {
    padding-top: 48px;
  }

  .profile-head {
    grid-template-columns: 1fr;
  }

  .avatar-shell {
    width: min(180px, 60vw);
  }

  .image-card {
    width: 260px;
  }

  .certificate-track figure,
  .life-track figure {
    width: 210px;
  }

  .motto-panel p:last-child {
    text-align: left;
  }
}